subnet.im

AS8070Microsoft Corporation

United StatesRegistryARIN

As of 10th November 2026, AS8070 (Microsoft Corporation), a network registered in the United States with ARIN, originates 30 IPv4 prefixes covering 1.1M addresses and 14 IPv6 prefixes. By IPv4 address space that makes it the 448th-largest of the 80,733 networks we see originating IPv4, and the 104th-largest of 18,751 in the United States. It is seen behind 1 upstream network, most often AS8075 (Microsoft Corporation). Every one of its announcements has a valid RPKI ROA, and none are RPKI-invalid. 100% of its routes reach at least 90% of full-feed peers.

At a glance

IPv4 prefixes

30

IPv6 prefixes

14

IPv4 addresses

1.1M

IPv6 /64s

1.2B

Upstream graph

The networks AS8070 is seen behind, one and two hops out, drawn from real AS paths.

AS8070Toward the internet core
Upstream graph for AS8070: 3 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS8070Microsoft Corpora…This networkAS8075Microsoft Corpora…AS1299Arelion (fka. Tel…AS35280F5 Networks SARL

Networks observed one and two hops upstream of AS8070 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

2

adjacent networks

Upstreams
150%
Peers
150%
Downstreams
00%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS8070
NetworkCountryRelationshipPathsVantage pts
AS8075Microsoft CorporationUSPeer3,156139

Prefixes

All 44

The largest blocks AS8070 originates, widest first.

Largest prefixes originated by AS8070
PrefixAddressesVisibility
57.16.0.0/14262k76/76
20.34.0.0/15131k76/76
20.140.0.0/15131k76/76
20.158.0.0/15131k76/76
51.54.0.0/15131k76/76
52.126.0.0/15131k76/76
62.10.0.0/15131k76/76
195.134.224.0/198.2k76/76
131.253.80.0/204.1k76/76
131.253.112.0/212k76/76

Routing health

How AS8070's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid100.0%44
  • Invalid0.0%0
  • No ROA0.0%0

Propagation

  • Globally propagated90% of full-feed peers or more100.0%44
  • Partially propagated40% to 90%0.0%0
  • Seen by few peersUnder 40%0.0%0

Prefix sizes

IPv4 — 30 prefixes

IPv6 — 14 prefixes

  • /35537M × /6414.3%2
  • /3867.1M × /647.1%1
  • /4016.8M × /6414.3%2
  • /4865.5k × /6464.3%9

Recent changes

Announcements that started or stopped since 12th Oct 2026.

No announcement by AS8070 started or stopped in this period.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.